class Shoulda::Matchers::ActiveRecord::AssociationMatchers::DependentMatcher

def description
  "dependent => #{dependent}"
end

def generate_missing_option
  [
    "#{name} should have",
    (dependent == true ? 'a' : dependent),
    'dependency'
  ].join(' ')
end

def initialize(dependent, name)
  @dependent = dependent
  @name = name
  @missing_option = ''
end

def matches?(subject)
  self.subject = ModelReflector.new(subject, name)
  if option_matches?
    true
  else
    self.missing_option = generate_missing_option
    false
  end
end

def option_matches?
  option_verifier.correct_for?(option_type, :dependent, dependent)
end

def option_type
  case dependent
    when true, false then :boolean
    else :string
  end
end

def option_verifier
  @option_verifier ||= OptionVerifier.new(subject)
end